Last modified: 2014-02-12 23:37:57 UTC
This occurs with Seamonkey 2.13.2. When pressing the fullscreen option, the player disappears and the console shows: "Timestamp: 09-11-12 11:17:13 Warning: Request for full-screen was denied because full-screen API is disabled by user preference. Source File: https://commons.wikimedia.org/wiki/File:Maschine-stadt-luzern.ogv Line: 0"
See also: document.fullScreenEnabled vs document.mozFullScreenEnabled vs. videoEl.webkitSupportsFullscreen https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode https://developer.mozilla.org/en-US/docs/DOM/document.mozFullScreenEnabled